CN100515311C - Electrical bending endoscope - Google Patents

Abstract

An electrically bending endoscope, comprising a driving force transmission mechanism transmitting a driving force for bending a bent part (12b), a motor feeding the driving force to the driving force transmission mechanism, a driving force interrupting mechanism installed on a transmission route for the driving force transmitted from the motor to the bent part (12b) and interrupting the transmission of the driving force, and a switching operation member (23x) for operating the interruption of the driving force interrupting mechanism. The electrically bending endoscope also comprises a click mechanism having a click spring (24) and click recessed parts (22d, 22e) generating a discontinuous variation in the quantity of force when the switching operation member (23x) is operated to allow an operator to awaken the state of the switching operation member (23x) to prevent an erroneous operation.

Description

Electrically bent endoscope

Technical field

The present invention relates to a kind of electrically bent endoscope, specifically, relate to a kind of such electrically bent endoscope, it is to have to make the endoscope of the mechanism of bending section bending by electric driving force, and has the driving force interrupted gear (clutch) that the transmission that is located on its driving force transmission mechanism and makes driving force is intermittently carried out.

Background technology

In the past, the driver part that comprises formations such as electro-motor is set in endoscopic procedure portion, utilize the bending section of the driving force remote manipulation endoscope insertion part of this driver part to make its bending, the electrically bent endoscope proposition that constitutes like this has multiple, for example can enumerate the scheme of Japanese patent laid-open 5-95896 communique record.

Existing electrically bent endoscope is generally between driver parts such as drive motors (drive division) and bending section (being driven portion), setting comprises the driving force transmission mechanism that traction element (cable) etc. constitutes, thereby the driving force of the direction of rotation that will be produced by driver part converts the driving force of desired direction to, and can transmit this driving force to bending section.Like this, be located at the rotary driving force that the driver part (drive motors) of operating portion side produces and pass to bending section by the driving force transmission mechanism.Like this, this bending section can be in prescribed limit free bend.

This existing electrically bent endoscope is because its everything all depends on the driving force of driver part, so this driver part, driving force transmission mechanism and bending section are in connection status all the time.Be under the situation of this state, for example when the power supply to driver part stops, according to the rotation stop position of this driver part, bending section stops at the state that the case of bending of bending section is fixed.Under this state, because driver part is in the state that draws traction element (cable) all the time, so this traction element is applied sizable load all the time continuously.

Promptly, when using this electrically bent endoscope to check etc., thereby drive this driver part to the driver part power supply and make its rotation, at this moment, for the driving force that makes driver part can pass to bending section by the driving force transmission mechanism all the time, so driver part, driving force transmission mechanism, bending section are in connection status.

, on the other hand, when the power supply to driver part stops, for example when the carrying of endoscope or when keeping etc. be not used under the situation of inspection, need make the driving force of driver part not pass to bending section.

Therefore, the driving force transmission mechanism of existing electrically bent endoscope generally is being provided with driving force interrupted gear (hereinafter referred to as clutch) from driver part to the driving force bang path of bending section.This driving force interrupted gear is used for switching following two states arbitrarily: can pass to the state of bending section by the driving force that driver part produces and can not transmit this driving force state, be the state of temporarily disconnected driving force bang path.And this driving force interrupted gear for example is located at the rotating driveshaft of driver part and is used for from this rotating driveshaft between regulation component parts of traction element transmission of drive force etc.

By this clutch is set, the connection status between temporarily disconnected driver part and the driving force transmission mechanism at random.And, when having removed both connection status (when temporarily being in dissengaged positions), therefore the strength of driver part can not pass to the driving force transmission mechanism, can not apply load to bending section, so can avoid the state that fixes with factitious case of bending etc.

The electrically bent endoscope of above-mentioned Japanese patent laid-open 5-95896 communique record is provided with in its operating portion inside: as the main frame of the fixed part of this operating portion; And motor frame, it constitutes to be free to slide relative to this main frame and moves, and is used to carry and fixedly makes drive motors that driven wheel rotates etc.And, on described motor frame, be provided with the fastening parts, these fastening parts be used on the rotating shaft that retainer shaft is bearing in drive motors driven wheel with and the driven wheel that is connected of crooked cable between engagement.In addition, to the regulation functional unit (lobe plate) stipulate lock operation the time, these fastening parts by fastening on the fixed part of main frame side.And when the releasing operation that described functional unit (lobe plate) is stipulated, after the fastening state of described fastening parts was removed, motor frame slided relative to main frame and moves, and two gears that are in engagement separate.

Like this, by the functional unit of any operating provision, the driving force on the driving force bang path between can carrying out arbitrarily from the driver part to the bending section interrupted.

The handover operation parts of this clutch for example generally are located at the assigned position of operating portion etc.Therefore, for example when using this endoscope, need prevent to apply unintentional strength from the outside to the handover operation parts, even and for example be subjected to this strength and can not easily carry out handover operation, and need take measures to make and can not produce maloperation because of user.In addition, under the deliberate situation of user, the cut-out that then needs to carry out reliably clutch be connected.

Summary of the invention

The present invention In view of the foregoing proposes, its purpose is to provide a kind of electrically bent endoscope, it can be carried out more reliably, the effect of the clutch by being applicable to electrically bent endoscope the connection of the driving force bang path that can realize and the switching of cut-out, and can keep the state that sets reliably, make when carrying out handover operation user can learn the state that sets that switches to really simultaneously, can improve operability and guarantee safety.

And, another object of the present invention is to provide a kind of electrically bent endoscope, wherein, it has been realized not and can guarantee higher safety because of carrying out the structure of change action with respect to the handover operation parts easily from the strength of outside.

Electrically bent endoscope of the present invention comprises: as the driver element of driving force supply source; The driving force transfer unit, its driving force that is used for supplying with from this driver element passes to bending section so that this bending section bending; The interrupted unit of driving force, it is located at from above-mentioned driver element on the driving force bang path that above-mentioned bending section transmits, and is used to make the transmission of driving force intermittently to carry out; The handover operation unit, it constitutes and the interrupted unit interlock of this driving force, and makes by the interrupted unitary driving force transmission of this driving force interrupted by operation; Detent mechanism, it is made of ratchet spring and two ratchet recesses, by moving, prevent that the transmission of the interrupted unitary described driving force of described driving force from not inadvertently being operated position that is in connection status and the position that is in disarm state position in addition with the unitary operations linkage of described handover operation.

In addition, electrically bent endoscope of the present invention comprises: elongated insertion section, its have can be in prescribed limit the bending section of free bend; Be located at the operating portion of the base end side of this insertion section; Generation is used to make the drive source of the driving force of above-mentioned bending section bending; The driving force transmission mechanism, its driving force that is used for supplying with from this drive source passes to above-mentioned bending section; The driving force interrupted gear, it is located at from above-mentioned drive source on the driving force bang path that above-mentioned bending section transmits, and is used to make the transmission of driving force intermittently to carry out; The handover operation parts, its be located in the aforesaid operations portion and with above-mentioned driving force interrupted gear mechanical connection, make by the driving force transmission of this driving force interrupted gear interrupted by operation; Detent mechanism, it is made of ratchet spring and two ratchet recesses, move by operations linkage, prevent that the transmission of the interrupted unitary described driving force of described driving force from not inadvertently being operated position that is in connection status and the position that is in disarm state position in addition with described handover operation parts.

Description of drawings

Fig. 1 is the integrally-built frame assumption diagram of the endoscope apparatus of the summary electrically bent endoscope of representing to use the present invention's the 1st embodiment.

Fig. 2 amplifies the summary construction diagram of expression with the part of the operating portion of the electrically bent endoscope of the present invention's the 1st embodiment, be near the internal structure of handover operation parts of the expression interrupted switching mechanism of driving force (clutch), and expression handover operation parts are positioned at the figure of the state of link position.

Fig. 3 is that the part with the operating portion of Fig. 2 is to take out the figure that represents near the handover operation parts, is the major part side view when arrow A direction shown in Figure 2 is watched.

Fig. 4 amplifies the summary construction diagram of expression with the part of the operating portion of the electrically bent endoscope of the present invention's the 1st embodiment, be near the internal structure of handover operation parts of the expression interrupted switching mechanism of driving force (clutch), and expression handover operation parts are positioned at the figure of the state of removing the position.

Fig. 5 amplifies the summary construction diagram of expression with the part of the operating portion of the electrically bent endoscope of the present invention's the 2nd embodiment, is near the figure of internal structure the handover operation parts of the expression interrupted switching mechanism of driving force (clutch).

Fig. 6 amplifies the summary construction diagram of expression with the part of the operating portion of the electrically bent endoscope of the present invention's the 3rd embodiment, is near the figure of internal structure the handover operation parts of the expression interrupted switching mechanism of driving force (clutch).

Fig. 7 is the profile along the 7-7 line of Fig. 6, is the figure that represents the handover operation parts in detail.

Fig. 8 amplifies the summary construction diagram of expression with the part of the operating portion of the electrically bent endoscope of the present invention's the 4th embodiment, is near the figure of internal structure the handover operation parts of the expression interrupted switching mechanism of driving force (clutch).

Fig. 9 amplifies the summary construction diagram of expression with the part of the operating portion of the electrically bent endoscope of the present invention's the 5th embodiment, is the figure that mainly represents the handover operation parts of the interrupted switching mechanism of driving force (clutch).

Figure 10 amplifies the summary construction diagram of expression with the part of the operating portion of the electrically bent endoscope of the present invention's the 6th embodiment, is near the figure of structure the handover operation parts of the expression interrupted switching mechanism of driving force (clutch).

Figure 11 is that the part with the operating portion of Figure 10 is to take out the figure that represents near the handover operation parts, is the major part side view when arrow C direction shown in Figure 10 is watched.

Figure 12 is that the part with the operating portion of the electrically bent endoscope of the present invention's the 7th embodiment is to take out the side view of representing near the handover operation parts.

Figure 13 is to cut expression open near the handover operation parts with the part of the operating portion of the electrically bent endoscope of the present invention's the 7th embodiment, is the approximate three-dimensional map when these handover operation parts are watched from the left side.

Figure 14 is the major part profile that the part of the operating portion of the electrically bent endoscope of the present invention's the 8th embodiment is amplified expression, is the figure that near the internal structure the handover operation parts of the interrupted switching mechanism of driving force (clutch) represented in summary.

Figure 15 is the major part profile that the part of the operating portion of the electrically bent endoscope of the present invention's the 9th embodiment is amplified expression, is near the figure of internal structure the handover operation parts of the expression interrupted switching mechanism of driving force (clutch).

Figure 16 is the figure of position of centre of gravity CB of operating portion of the electrically bent endoscope of expression the respective embodiments described above.

The specific embodiment

Below, with reference to the description of drawings embodiments of the present invention.

At first, before specifying the electrically bent endoscope of present embodiment, the overall structure of the endoscope apparatus that uses according to this electrically bent endoscope of Fig. 1 diagrammatic illustration.

Fig. 1 is the integrally-built frame assumption diagram of the endoscope apparatus of the summary electrically bent endoscope of representing to use the present invention's the 1st embodiment.

As shown in Figure 1, endoscope apparatus 1 constitutes and comprises: electrically bent endoscope (the following endoscope that suitably slightly is called) 10; This endoscope 10 is provided the light supply apparatus 13 of illuminating bundle; Reception is from the signal of this endoscope 10 outputs and carry out the video processor 14 of the signal processing of various regulations; Reception is from the picture signal of the prescribed form of these video processor 14 outputs, and demonstration is based on the display device 15 of the specified image of this picture signal; Be used to control the motor control assembly as driving control device (the electric machine controller unit is also referred to as MCU) 16 of the flexure operation of endoscope 10; Supply gas, send the AWS control device 17 of exercises such as water, attraction etc. by endoscope's 10 controls.

Endoscope 10 constitutes and comprises: be used to insert the endoceliac insertion section 12 that is elongated tubular product such; Operating portion 11, the cardinal extremity that it is located at this insertion section 12, have the on-off state that is used to switch driving force interrupted gear described later (clutch), as various functional units such as the unitary handover operation parts of handover operation 23x; Universal cordage 18 stretches out from the side surface part of this operating portion 11, and forms and be branched off into two paths in the middle part.

Be provided with the adapter 18a that can be connected on the light supply apparatus 13 in an end of universal cordage 18 with freely plugging.In addition, be provided with the adapter 18b that can be connected on the motor control assembly 16 in the other end of this universal cordage 18 with freely plugging.Thus, operating portion 11, light supply apparatus 13 and the motor control assembly 16 with endoscope 10 couples together.

And, be extended with the cable 19 that has adapter 19a in the end from adapter 18a.This adapter 19a is connected on the corresponding connection parts of video processor 14.Thus, video processor 14 and operating portion 11 are coupled together.In addition, the signal cable 19b by regulation is connected with display device 15 on video processor 14.

On the other hand, the adapter 18b from universal cordage 18 is extended with the cable 20 that has adapter 20a in the end.This adapter 20a is connected on the corresponding connection parts of AWS control device 17.Thus, AWS control device 17 and operating portion 11 are coupled together.

Insertion section 12 constitutes and comprises: inflexible leading section 12a; Bending section 12b, it is arranged on the rear end side of this leading section 12a continuously, and can be in prescribed limit to all directions and their compound direction free bend up and down; Be arranged on the rear end side of this bending section 12b continuously and have the flexible strip flexible pipe 12c of portion.And the rear end side of the 12c of this flexible pipe portion is arranged on the assigned position of operating portion 11 integratedly continuously.

Each assigned position of operating portion 11 its outer surface sides is provided with a plurality of functional units that are used to carry out various operations, handover operation parts 23x etc. for example, and portion is provided with within it: as the drive motors (not illustrating especially) of driver part, this drive motors is driver element and drive source; To pass to by the driving force that this drive motors produces bending section 12b, as the driving force transmission mechanism of driving force transfer unit (diagram) especially; And constitute this driving force transmission mechanism a part, can mechanically carry out arbitrarily interrupted switching that driving force transmits as the interrupted unitary driving force interrupted gear of driving force (hereinafter referred to as clutch, diagram) especially etc.

In addition, about other unitary concrete structures,, therefore make its structure and existing electrically bent endoscope roughly the same owing to be the part not directly related with flesh and blood of the present invention, and detailed, only be elaborated below at the part that becomes feature of the present invention.

Fig. 2, Fig. 4 are the summary construction diagrams of a part of operating portion that amplifies the electrically bent endoscope of expression the present invention the 1st embodiment, near the internal structure the handover operation parts of the expression interrupted switching mechanism of driving force (clutch).In addition, Fig. 2 represents that the handover operation parts are in the state of link position.In addition, Fig. 4 represents that the handover operation parts are in the state of removing the position.And Fig. 3 is that the part with the operating portion of Fig. 2 is to take out the figure that represents near the handover operation parts, is the major part side view when arrow A direction shown in Figure 2 is watched.

As mentioned above, be provided with the driving force transmission mechanism (the driving force transfer unit does not illustrate especially) that comprises clutch in the inside of operating portion 11.This clutch constitutes and is located at one of functional unit on the side surface part of this operating portion 11 by operation is that handover operation parts 23x (handover operation unit) moves.

As shown in Figure 2, handover operation parts 23x is arranged to, be in the regulation position of the side surface part of operating portion 11, and freely rotate in the inner space that is formed at support 22a inboard, the internal fixation parts of described support 22a and operating portion 11 (not illustrating especially) are integrally formed.

These handover operation parts 23x constitutes and comprises: knob parts 23 are that the operator waits the position of operating by pinching with finger, and it is configured in the position that is exposed to operating portion 11 outsides; Pivot 22b, it supports this knob parts 23 with mode axle free to rotate, and with the interlock of the portion of principal organ (not shown) of clutch; Rotary part 22c, it is assembled into knob parts 23 and pivot 22b and becomes one; Ratchet spring (click spring) 24, it is made of elastic components such as for example leaf springs, is used for rotary part 22c is located and be limited in assigned position; And the pivot 24a of an end of this ratchet spring 24 of axle supporting etc.

Rotary part 22c is configured to freely rotate along the inner peripheral portion of support 22a, at the assigned position of the outer peripheral edges portion of this support 22a ratchet spring 24 is set.

The internal fixation parts (not shown) of one end of ratchet spring 24 relative operating portion 11 on pivot 24a fixedly install, and are formed with the convex spring 24b of portion at its another distolateral free end.This convex spring 24b of portion is arranged to make convex surface towards support 22a (rotary part 22c) side.Corresponding therewith, the regulation position on the outer peripheral face of support 22a penetrates and is provided with the 22aa of hole portion that can engage with the convex spring 24b of portion of ratchet spring 24.

Herein, the convex spring 24b of portion is configured among the 22aa of embedded hole portion, and its convex surface is outstanding slightly to the inboard of support 22a.In addition, in order to keep this state, the active force of the ratchet spring 24 under the normal condition is towards arrow X1 directive effect shown in Figure 2.Therefore, the logical via portion 22aa of the convex spring 24b of portion is connected on the outer peripheral face of rotary part 22c all the time, and pushes this rotary part 22 with the active force of regulation.

In other words, the active force of ratchet spring 24, with to the direction of action of clutch or handover operation parts 23x, i.e. the elasticity strength of the direction (this figure arrow X1 direction) different, act on the outer peripheral face of rotary part 22c with the vector of direction of rotation (the arrow R direction among Fig. 2).

As mentioned above, rotary part 22c is assembled into knob parts 23 and pivot 22b and becomes one, and when arrow R direction shown in Figure 2 was rotated, rotary part 22c and pivot 22b rotated to equidirectional together by operator's operation when knob parts 23.

And, be formed with two ratchets (click) recess at the outer peripheral face of rotary part 22c, i.e. the 1st ratchet recess 22d and the 2nd ratchet recess 22e.These two ratchet recesses (22d, 22e) form the shape that can engage with the convex spring 24b of portion of ratchet spring 24.And rotary part 22c rotates, and the convex spring 24b of portion of ratchet spring 24 embeds the either party of two ratchet recesses (22d, 22e), thereby rotary part 22c is located and be limited in assigned position.That is, utilize ratchet spring 24 and two ratchet recesses (22d, 22e) to constitute so-called detent mechanism.

In addition, the formation position of two ratchet recesses is to set like this.Promptly, under the state that clutch (not shown) connects, can pass to by the driving force transmission mechanism that comprises clutch under the state of bending section 12b (with reference to Fig. 1) at the driving force of setting drive motors (not shown) for, the set positions of the 1st ratchet recess 22d is become to make ratchet spring 24 be fastened on the 1st ratchet recess 22d of rotary part 22c.In addition, in the following description, the position of rotary part 22c of this moment is called link position.

On the other hand, setting for can remove the state that the driving force of drive motors (not shown) transmits by clutch (not shown) time, the set positions of the 2nd ratchet recess 22e is become to make ratchet spring 24 be fastened on the 2nd ratchet recess 22e of rotary part 22c.In addition, in the following description, the position of rotary part 22c of this moment is called removes the position.

In other words, starting stage (the link position that handover operation parts 23x (more particularly being rotary part 22c) is moving by the operator, with reference to Fig. 2) and later stage (releasing position, with reference to Fig. 4), constitute the operator is given discontinuous strength variation, is the strength perception change unit of clicking sense.And detent mechanism is made of two the ratchet recesses (22d, 22e) that comprise rotary part 22c and ratchet spring 24, plays and can promptly operate self-induction notice of invitation unit, the unitary effect of perception from the unit of the operation of perception handover operation parts 23x.

In addition, as shown in Figure 3, the knob parts 23 of handover operation parts 23x are arranged to from the outer surface of operating portion 11 outstanding towards the outside.Like this, the operator holds easily and pinches this knob parts 23 when making the interrupted and operation handover operation parts 23x of clutch.These handover operation parts 23x on the other hand, protrudes in outside handover operation parts 23x by above-mentioned detent mechanism location and be limited in assigned position, so can not run counter to operator's intention and unexpected moving.And detent mechanism also plays and prevents that handover operation parts 23x is by the effect of the anti-stop element (locking apparatus is prevented in maloperation) of the maloperation of maloperation.

Below, the effect of carrying out by operation handover operation parts 23x in the endoscope 10 of said structure is described.

State representation clutch shown in Figure 2 is in the situation of connection status, and promptly handover operation parts 23x (rotary part 22c) is in the situation of link position.Under this state, ratchet spring 24 is fastened on the 1st ratchet recess 22d.Herein, the operator pinches the knob 23 of handover operation parts 23x, makes it to rotating along the clockwise direction among for example Fig. 2 of the direction of arrow R shown in Figure 2.Like this, rotary part 22c also begins to rotate to this direction.

At this moment, as mentioned above, engaging has the convex spring 24b of portion of ratchet spring 24 in the 1st ratchet recess 22d of this rotary part 22c, on the outer peripheral face of rotary part 22c, the active force of ratchet spring 24 to the direction of arrow X1 shown in Figure 2, promptly with the different directive effect of direction of rotation (direction of action of handover operation parts 23x) of rotary part 22c.

, begin when clockwise direction rotates herein,, rotate Yi Bian overcome the active force of ratchet spring 24 on one side rotary part 22c keeps the butt state of the concave surface of the convex surface of the convex spring 24b of portion of ratchet spring 24 and the 1st ratchet recess 22d at rotary part 22c.That is, on one side to this ratchet spring 24 rotation on one side of arrow X2 direction pushing tow shown in Figure 2.

In other words, the convex surface of the convex spring 24b of portion of ratchet spring 24 slides and is pressed to arrow X2 direction simultaneously along the concave surface of the 1st ratchet recess 22d.And the convex spring 24b of portion of ratchet spring 24 breaks away from ratchet recess 22d.

Therefore, begin from handover operation parts 23x to turn to the convex spring 24b of portion break away from ratchet recess 22d the moment during, need strong slightly rotation strength.And in the moment that the convex spring 24b of portion of ratchet spring 24 breaks away from ratchet recess 22d, rotary part 22c rotates strength moment changes and dies down slightly.The variation of the intensity that the finger that it is the operator by pinching handover operation parts 23x that this strength changes etc. can be felt.

In addition, make handover operation parts 23x when equidirectional rotates by the operator, rotary part 22c also rotates to equidirectional.At this moment, the convex spring 24b of portion of ratchet spring 24 is by self active force effect towards arrow X1 direction shown in Figure 2 (from the outer peripheral face of the rotary part 22c direction towards central point), keeps the butt state with the outer peripheral face of rotary part 22c.When rotary part 22c was rotated further, the 2nd ratchet recess 22e just engaged with ratchet spring 24 soon.At this constantly, the operator stops the action of handover operation parts 23x.

In this case, at first, the concave surface of the convex surface of the convex spring 24b of portion of ratchet spring 24 from the outer peripheral face of rotary part 22c along the 2nd ratchet recess 22e slides.And, being fastened on moment among the 2nd ratchet recess 22e at the convex spring 24b of portion of ratchet spring 24, rotation strength moment of rotary part 22c changes.The variation of the intensity that the finger that it also is the operator by pinching handover operation parts 23x that this strength changes etc. can be felt.

And, in the moment of the convex spring 24b of portion of ratchet spring 24 and the 2nd ratchet recess 22e engaging, the active force of ratchet spring 24 to arrow X1 direction, promptly with rotation direction (direction of action of handover operation parts 23x) the different directive effect of vector of rotary part 22c.Therefore, in order to keep this state, the position of rotary part 22c on its rotation direction is limited.

, by from link position shown in Figure 2 (the convex spring 24b of portion of ratchet spring 24 is fastened on the state the 1st ratchet recess 22d) operation handover operation parts 23x, make rotary part 22c when clockwise direction rotates, pivot 22b also rotates to equidirectional.By the rotation of this pivot 22b, the regulation cam mechanism action in the component parts of the part of formation clutch makes the regulation position on the driving force bang path move to prescribed direction.

In addition, be used to make the structure of the alternate clutch of driving force to be not limited to adopt the unit that uses above-mentioned cam mechanism.For example, also can use the female cam part of cutting, cutting that the spline parts of the rotation of externally threaded spindle unit and fastening cam part are arranged, constitute portion of clutch cam mechanism.Under this situation, under the state of the rotation of passing through spline parts fastening cam part, by making the spindle unit rotation, cam part moves to the thrust direction (jack-up direction) of spindle unit, can carry out the interrupted of clutch.Under the situation that adopts this mechanism, can improve the assembling and the decomposability of portion of clutch cam mechanism, and can improve the rigidity of portion of clutch cam mechanism.

Return Fig. 2, be fastened on moment among the 2nd ratchet recess 22e (rotary part 22c is set in the moment of removing the position, with reference to Fig. 4) at the convex spring 24b of portion of ratchet spring 24, the part of this driving force transmission mechanism is in dissengaged positions.In other words, remove the transmit mode of the driving force between operating portion 11 and the bending section 12b (with reference to Fig. 1) by clutch.

Therefore, the discontinuous strength when operator's perception rotary part 22c rotates changes (clicking sense), can learn that whether clutch is in action.That is, the operator changes (clicking sense) by the discontinuous strength that perception produces when carrying out the rotating operation of handover operation parts 23x, can learn the action of clutch.

And,, can realize making clutch move to connection status from disarm state by to counter clockwise direction rotating operation handover operation parts 23x (rotary part 22c) it being moved to link position shown in Figure 2 from the state that is in releasing shown in Figure 4 position.During this situation act as with illustrated make clutch from the opposite operation of the effect of connection status when disarm state moves, become connection status from disarm state.

As mentioned above, according to above-mentioned the 1st embodiment, constitute: have detent mechanism, this detent mechanism and the handover operation parts 23x interlock action that makes the clutch action as functional unit, and set for like this, promptly, the action zero hour when rotating operation handover operation parts 23x and release are constantly, this detent mechanism (operation self-induction notice of invitation unit, the perception unit) produces discontinuous strength and change (clicking sense), and producing the moment that this strength changes (clicking sense), carry out the interrupted change action of clutch, so when the operator operates handover operation parts 23x it is rotated, change (clicking sense) by the discontinuous strength of perception, can learn the action of clutch really.

And, owing to be arranged to make its outer surface to give prominence to (with reference to Fig. 3) the knob parts 23 of handover operation parts 23x to the outside from operating portion 11, therefore the operator pinches the knob parts 23 that are used to make the alternate handover operation parts of clutch 23x easily, can help to improve operability.On the other hand, handover operation parts 23x is owing to constitute by the detent mechanism as the anti-stop element (locking apparatus prevent in maloperation) of maloperation and be positioned and be limited in the either party of assigned position (two positions that clutch moves), thus handover operation parts 23x can not run counter to the operator intention and by involuntary maneuver.Therefore, can guarantee higher safety.

And, owing to constitute, therefore for example compare with adopting situation in the structure of rectilinear direction operation sliding operational unit etc. at direction of rotation operation handover operation parts, have to be not easy to produce because of external force unexpectedly and cause the advantage of maloperation.In addition, at the functional unit of direction of rotation operation,,, has the advantage that does not take the configuration place on a large scale so when operation, can not move because does not move the position of its center of rotation.

Below, the electrically bent endoscope of the present invention's the 2nd embodiment is described.

Fig. 5 amplifies the summary construction diagram of expression with the part of the operating portion of the electrically bent endoscope of the present invention's the 2nd embodiment, is near the figure of internal structure the handover operation parts of the expression interrupted switching mechanism of driving force (clutch).

As shown in Figure 5, the structure of present embodiment is roughly the same with above-mentioned the 1st embodiment basically.Therefore, omit specifying of same structure, below part inequality only is described.

The endoscope of present embodiment on the basis of the endoscope of above-mentioned the 1st embodiment, also be provided with the operating state that is used to detect clutch, as the sense switch 26 of checkout gear.For example shown in Figure 5, this sense switch 26 is arranged to one with the knob parts 23 of handover operation parts 23Ax.And, in order to transmit from the detection signal of this sense switch 26 outputs, the lead 39 that stretches out from this sense switch 26 as signal cable (holding wire), by universal cordage 18, be connected with motor control assembly 16A (with reference to Fig. 5) in the formation unit of the endoscope apparatus 1 (with reference to Fig. 1) that uses this electrically bent endoscope 10A.

Under this situation, handover operation parts 23Ax is arranged to free to rotate.As mentioned above, under situation about sense switch 26 being located on these handover operation parts 23Ax, the lead 39 that stretches out from this sense switch 26 be configured in rotary part 22c etc. near.Therefore, under this state, this lead 39 might twine on the parts (22c etc.) of those rotations.Therefore, consider this point, in the present embodiment, as shown in Figure 5, near handover operation parts 23Ax (rotary part 22c), be provided with a part that is used for lead 39 and be fixed on wiring fixed part 40 on the assigned position as the holding wire fixed part.

This wiring fixed part 40 with the integrally formed support 22a of the internal fixation parts (not shown) of operating portion 11A near assigned position, dispose along the outer peripheral edges portion of support 22a.And the two ends of this wiring fixed part 40 are by supportings such as spindle units.In addition, be provided with support 40a in the substantial middle portion of wiring fixed part 40, the part of its fixing cord 39 parts such as internal wiring such as grade, and form the regulation shape that can limit its movable range (for example post shapes etc.).

Therefore, be fixed on by a part on the support 40a of this wiring fixed part 40,, can prevent that these lead 39 parts such as internal wiring such as grade from for example twining on the movable members such as rotary part 22c so that limit its movable range with lead 39.

As mentioned above, the lead 39 from sense switch 26 stretches out is connected with motor control assembly 16A by universal cordage 18.Thereby the regulation detection signal (expression detects the signal of the action of clutch) by this sense switch 26 produces is delivered to motor control assembly 16A.

Meanwhile, be provided with notice parts 27 as notification unit in motor control assembly 16A side, it constitutes the signal of reception from above-mentioned sense switch 26, and shows the warning of regulation or notice etc. with the form of regulation.

As these notice parts 27, can use various parts, for example can adopt to make and use up lamp or the light emitting diode luminous components such as (LED) that shows warning or notice, the pronunciation parts such as buzzer that perhaps adopt to use sound to warn or notify perhaps adopt by producing that vibration is warned or the oscillating component notified etc.Other structures and above-mentioned the 1st embodiment are identical.In addition, can produce vibration, motor be replaced with short cycle rotating with vibrative structure but also can adopt by motor control assembly 16 by the special-purpose vibration generating arrangement of assembling in operating portion 11.

Below, among the 10A of endoscope of simple declaration above-mentioned the 2nd embodiment of described formation on press, by operating the effect that handover operation parts 23Ax carries out.

At first, the same with the 1st above-mentioned embodiment, the operator pinches the knob parts 23 of handover operation parts 23Ax, and it is rotated along the clockwise direction among for example Fig. 5 of the direction of arrow R shown in Figure 5.Like this, rotary part 22c also begins to rotate to equidirectional.Then, process and the identical action of above-mentioned the 1st embodiment, the convex spring 24b of portion of ratchet spring 24 is fastened among the 2nd ratchet recess 22e.This moment (rotary part 22c is set in the moment of removing the position), the part of driving force transmission mechanism (not shown) is in dissengaged positions, and the driving force transmit mode between operating portion 11 and the bending section 12b (with reference to Fig. 1) is removed by clutch.Meanwhile, sense switch 26 produces the specified signal that clutch moves and removed clutch.This signal passes to motor control assembly 16A by lead 39.

Motor control assembly 16A receives this clutch ring off signal and makes 27 actions of notice parts.In this case, notice parts 27 are for example when using luminous component, carry out bright lamp action and the flicker action of lamp, LED etc., when using pronunciation part, only produce the buzz of stipulated time, when using oscillating component, carry out and only carry out the actions such as regulation vibration of stipulated time.Like this, according to the compulsory exercise of notice parts 27, the operator confirms clutch and is disengaged.

On the other hand, make clutch from disarm state under the situation that connection status moves, also the 1st embodiment with above-mentioned is the same, can make it rotate and move to link position shown in Figure 5 from the state that is positioned at the releasing position to counter clockwise direction by operation handover operation parts 23Ax (rotary part 22c) and realize.

In this case, the convex spring 24b of portion that moves to link position, the ratchet spring 24 of regulation at handover operation parts 23Ax (rotary part 22c) is fastened on the moment among the 1st ratchet recess 22d, and sense switch 26 produces the signal (clutch connection signal) that clutches action and this clutch are in connection status.After receiving this signal, the notice parts 27 of motor control assembly 16A extinguish the luminous component in the bright lamp, or carry out the articulation of pronunciation part or the oscillation action of oscillating component etc.Thus, the operator confirms clutch and connects.

In addition,, be not limited to the mode of above-mentioned explanation, also can set the different therewith moment about the moment by producing specified signal by switch 26.That is, the generation that is connected signal with clutch as the clutch ring off signal constantly for example also can be set at the moment after handover operation parts 23Ax has just begun to rotate.

According to above-mentioned the 2nd embodiment of above explanation, can obtain and the identical effect of above-mentioned the 1st embodiment.In addition, owing to be provided with by vision or audition and can confirm the notice parts 27 that the state of clutch has been switched, and the sense switch 26 of the action of interlock of the rotating operation of setting and handover operation parts 23Ax and detection clutch, the operator makes 27 actions of notice parts according to detection signal, so can more positively grasp the state of clutch from this sense switch 26.

And, even for example since the 10A of endoscope in use drop etc. because of error, make clutch move when involuntary, the operator also can confirm this situation by at least one side of vision and audition, so can further help to improve operability and safety.

In addition, by a part that is provided for fixing cord 39 and the wiring fixed part 40 that limits its movable range, can prevent that lead 39 parts such as internal wiring such as grade from for example twining on the movable members such as rotary part 22c.Thus, can constitute the electrically bent endoscope that to guarantee greater security.

In addition, in the present embodiment, to be located at motor control assembly 16A side as the notice parts 27 of notification unit, but be not limited to this form, can consider various forms, for example in the 10A of endoscope, operated by rotary motion line-of-sight observation with the field of view of observation instrument (not shown) in carry out demonstrations such as regulation warning, or the display frame of the using display device demonstration of stipulating etc., and appropriate combination to make also be to be relatively easy to thing in various manners.

Below, the electrically bent endoscope of the present invention's the 3rd embodiment is described.

Fig. 6 amplifies the summary construction diagram of expression with the part of the operating portion of the electrically bent endoscope of the present invention's the 3rd embodiment, is near the figure of internal structure the handover operation parts of the expression interrupted switching mechanism of driving force (clutch).Fig. 7 is the profile along the 7-7 line among Fig. 6, is the figure that represents the handover operation parts in detail.

As shown in Figure 6, the structure of present embodiment is also roughly the same with above-mentioned the 1st embodiment.Therefore, omit specifying of same structure, below part inequality only is described.

In above-mentioned the 1st embodiment, constitute: only by making handover operation parts 23x rotate single stepping to direction along the arrow R of Fig. 2, can remove the position restriction of detent mechanism, wherein, detent mechanism is as the anti-stop element (locking apparatus is prevented in maloperation) of maloperation, operation self-induction notice of invitation unit and perception unit.Relative therewith, in the present embodiment, constitute: the position of restriction handover operation parts 23Bx also prevents the position restriction mechanism as the anti-stop element (locking apparatus prevent in maloperation) of maloperation of maloperation, limits through the position that can remove handover operation parts 23Bx after the operation of two steps.

That is, in the present embodiment, cancel the detent mechanism of above-mentioned the 1st embodiment, and position restriction mechanism 30 is set with for it, this point is different with above-mentioned the 1st embodiment.

Position restriction mechanism 30 constitutes and comprises: as the fastening bar 28 of handover operation position limiting part, it is and knob parts 23 assembling all-in-one-piece fastening parts, and can freely rotates in prescribed limit; By fastening portion 29, it is formed in the whole movable range of this fastening bar 28, and has be used for engaging with this fastening bar 28 two by fastening end difference 29d, 29e.

As shown in Figure 7, the fastening bar 28 of position restriction mechanism 30 constitutes and comprises: section forms the roughly rod unit 28a of L word shape; Extension spring 28d to this rod unit 28a application of force.

On the other hand, be integrally formed in the regulation position of internal fixation parts of the operating portion 11B of the 10B of this endoscope by fastening portion 29, promptly among the operating portion 11B along the regulation position of the outer peripheral edges of support 22Ba.

This is formed in the whole movable range of fastening bar 28 by fastening portion 29, is formed with the 1st end difference 29d (link position) near one end thereof, is formed with the 2nd end difference 29e (releasing position) near its other end.These two end differences (29d, 29e) form the shape that can engage with the regulation position of the rod unit 28a of above-mentioned fastening bar 28.And when this rod unit 28a rotated with handover operation parts 23Bx and is configured in assigned position, this regulation position engaged with the either party of two end difference 29d, 29e.By both engagings, limit the position of handover operation parts 23Bx.

Therefore, rod unit 28a is supported by pivot 28e axle, and freely rotates along arrow Rx direction shown in Figure 7 in prescribed limit relative to the fixed position of knob parts 23.Under this situation, the 28b of galianconism portion of rod unit 28a is configured to and knob parts 23 almost parallels, a long-armed 28c is configured at least that its front end position is in and the roughly orthogonal direction of knob parts 23, and with by the cascaded surface almost parallel of end difference 29d, the 29e of fastening portion 29.

And, being fixed with the distolateral of extension spring 28d at the regulation position of the 28b of galianconism portion of rod unit 28a side, another of this extension spring 28d be distolateral to be fixedly installed on the regulation position of knob parts 23.Thus, extension spring 28d is erected on 28b of galianconism portion and knob parts 23 space between the two, and has the active force of prolonging direction.

Therefore, this rod unit 28a is all the time by to the counter clockwise direction application of force along arrow Rx among Fig. 7 that with pivot 28e is center of rotation, that is, long-armed 28c is all the time by the surperficial application of force towards fastening portion 29.In other words, long-armed 28c is all the time by the arrow X4 direction application of force in Fig. 7.Therefore, long-armed the 28c of the rod unit 28a of fastening bar 28 under normal condition, be in all the time with by the state of the surperficial butt of fastening portion 29.

The fastening bar 28 of Gou Chenging is assemblied in the regulation position of handover operation parts 23Bx integratedly like this, and in this case, the leading section that rod unit 28a is configured to its long-armed 28c surpasses support 22Ba and reaches its outer circumferential side.Therefore, on support 22Ba, in the whole movable range of rod unit 28a, penetrate and be provided with circumferential groove 22Baa (with reference to Fig. 6).

And the handover operation parts 23Bx of present embodiment is covered by the knob lid 31 as guard block.This knob lid 31 is for example formed by water-proof parts such as rubber, and this knob lid 31 is arranged to rotate and to have watertightness relative to the exterior member 11Ba of operating portion 11B.Other structures and above-mentioned the 1st embodiment are identical.

Below, simple declaration is in the 10B of endoscope of above-mentioned the 3rd embodiment that constitutes as mentioned above, by operating the effect that handover operation parts 23Bx carries out.

At first, the same with the 1st above-mentioned embodiment, the operator is (with the state of state at this moment as the clutch connection) under state shown in Figure 6, pinch the knob parts 23 (the 1st operation) of handover operation parts 23Bx from the outer surface side of knob lid 31, make it rotate (the 2nd operation) along the clockwise direction among for example Fig. 6 of the direction of arrow R shown in Figure 6.

Herein, when pinching the knob parts 23 of handover operation parts 23Bx, the 28b of galianconism portion of the rod unit 28a of fastening bar 28 is also pinched with knob parts 23.Thus, rod unit 28a overcomes the active force of extension spring 28d, and being center of rotation with pivot 28e rotates towards the clockwise direction along the direction of arrow Rx shown in Figure 7.Therefore, in knob parts 23 side shiftings, long-armed 28c is disengaged (the 1st operation) with engaging of the 1st end difference 29d at the 28b of galianconism portion of this rod unit 28a.

Then, keep this state, promptly cover the state that 31 outsides pinch knob parts 23 and rod unit 28a, and make them simultaneously according to top described to clockwise direction rotation (the 2nd operation) from knob.

Herein, when handover operation parts 23Bx rotated to a certain degree, the leading section of long-armed the 28c of rod unit 28a broke away from the 1st end difference 29d fully.Therefore, if form this state,, also can not influence the rotating operation of handover operation parts 23Bx even how much alleviate the strength that pinches knob parts 23.

Like this, in the moment that handover operation parts 23Bx begins to rotate, clutch begins the releasing action of its connection status.And, in the moment (being set in the moment of removing the position) that rod unit 28a engages with the 2nd end difference 29e, the part of driving force transmission mechanism (not shown) is in dissengaged positions, and the driving force transmit mode between operating portion 11B and the bending section 12B (with reference to Fig. 1) is removed by clutch.

Therefore, the strength when operator's perception rod unit 28a engages with the 2nd end difference 29e changes, thereby can learn whether clutch moves.That is, the operator changes by the strength that perception produces when carrying out the rotating operation of handover operation parts 23Bx, can learn the action of clutch.

On the other hand, make clutch from disarm state under the situation that connection status moves, the same with the 1st above-mentioned embodiment, can be by handover operation parts 23Bx (rotary part 22c) be under the state of removing the position, carry out rotating operation with the state that pinches knob parts 23 and rod unit 28a simultaneously to counter clockwise direction, and move to link position shown in Figure 6 and realize.

In this case, move to the link position of regulation, the moment that rod unit 28a engages with the 1st end difference 29d at handover operation parts 23Bx (rotary part 22c), the clutch action also becomes connection status.The operator changes by the strength of perception this moment, thereby confirms that clutch connects.

In above-mentioned the 3rd embodiment of above explanation, can obtain and the identical effect of above-mentioned the 1st embodiment.

In addition, in the handover operation parts 23Bx of present embodiment, fastening bar 28 is set integratedly, so that at the link position of the connection status that keeps clutch and each assigned position of the releasing position of the connection status of removing this clutch, the rotation of handover operation parts 23Bx can be positively limited and maloperation can be prevented, for these handover operation parts 23Bx is rotated, at first carry out the operation of the fastening state of removing fastening bar 28, promptly pinch the operation (the 1st operation) of knob parts 23 and rod unit 28a simultaneously, carry out the rotating operation (the 2nd operation) of handover operation parts 23Bx then.

In other words, in the present embodiment, operation as the state that is used to switch clutch, because input block need carry out twice or twice above continued operation (operation continues), even therefore for example have unintentional external force to be applied on the handover operation parts 23Bx, can prevent that also it from rotating easily.This helps to prevent be switched because of error causes the state of clutch when not required, has played the effect of the anti-stop element (locking apparatus is prevented in maloperation) of maloperation.

In addition, in the present embodiment, constitute: by knob parts 23 and the fastening bar 28 that pinches handover operation parts 23Bx simultaneously, remove the rod unit 28a of this fastening bar 28 with by the fastening state of the 1st end difference 29b of fastening portion 29 or the 2nd end difference 29e, but the mode that this fastening is removed is not limited thereto, for example also can constitute: in handover operation parts 23Bx, knob parts 23 and rod unit 28a move freely integratedly vertically, before the rotating operation that carries out handover operation parts 23Bx, by they are being moved axially, fastening state that can relieving rod parts 28a.Under this situation, knob lid 31 is arranged to and can be had watertightness at axial stretching and relative exterior member 11Ba.

Below, the electrically bent endoscope of the present invention's the 4th embodiment is described.

Fig. 8 amplifies the summary construction diagram of expression with the part of the operating portion of the electrically bent endoscope of the present invention's the 4th embodiment, is near the figure of internal structure the handover operation parts of the expression interrupted switching mechanism of driving force (clutch).

As shown in Figure 8, the structure of present embodiment is roughly the same with above-mentioned the 2nd embodiment basically.Therefore, omit specifying of same structure, below part inequality only is described.

In the present embodiment, difference only is, the maintenance sense switch 32 that is provided as checkout gear replaces the sense switch 26 in above-mentioned the 2nd embodiment.The sense switch 26 of above-mentioned the 2nd embodiment is the unit that detects the operating state of clutch, but the unit of the maintenance sense switch 32 in the present embodiment is the detecting operation whether person kept handover operation parts 23Cx.

This keeps sense switch 32 for example the same with sense switch 26 in above-mentioned the 2nd embodiment, is arranged on integratedly on the knob parts 23 of handover operation parts 23Cx.

And, similarly, the lead 39 as signal cable that stretches out from this maintenance sense switch 32 is connected by the motor control assembly 16A (with reference to Fig. 8) in the formation unit of universal cordage 18 and the endoscope apparatus 1 (with reference to Fig. 1) that uses electrically bent endoscope 10C.

And the same with above-mentioned the 2nd embodiment, lead 39 is fixed its part by the support 40a by wiring fixed part 40, can limit its movable range.Prevent that thus lead 39 parts such as internal wiring such as grade from for example twining on the movable members such as rotary part 22c.Other structures and above-mentioned the 2nd embodiment are identical.

In the 10C of endoscope of above-mentioned the 4th embodiment that constitutes as mentioned above, as described below by the effect that operation handover operation parts 23Cx carries out.

At first, the operator makes by the operation of stipulating and keeps sense switch 32 actions.At this moment, produce expression handover operation parts 23Cx by maintenance detection signal that the operator kept, regulation.This maintenance detection signal passes to motor control assembly 16A by lead 39.

Then, the same with above-mentioned the 1st, the 2nd embodiment, the operator pinches the knob parts 23 of handover operation parts 23Cx, and it is rotated along the clockwise direction among for example Fig. 8 of the direction of arrow R shown in Figure 8.At this moment, rotary part 22c also begins to rotate to equidirectional.Then, process and the above-mentioned identical action of the 1st, the 2nd embodiment, the convex spring 24b of portion of ratchet spring 24 is fastened among the 2nd ratchet recess 22e.This moment (rotary part 22c is set in the moment of removing the position), the part of driving force transmission mechanism (not shown) is in dissengaged positions, the transmit mode of the driving force between operating portion 11C and the bending section 12b (with reference to Fig. 1) is removed by clutch, and these are identical with the 1st above-mentioned embodiment.Therefore, the operator can confirm that by the clicking sense of this moment clutch removes.

, as mentioned above, when keeping sense switch 32 persons of being operated to operate, produce the maintenance detection signal of regulation, this maintenance detection signal passes to motor control assembly 16A by lead 39.Whether motor control assembly 16A confirms to be rotated at handover operation parts 23Cx and has operated official hour or whether clutch has been in disarm state after receiving this and keeping detection signal.For this reason, be provided with the status detection unit that for example detects handover operation parts 23Cx or detect the status detection unit of clutch, the lead of its detection signal by regulation etc. passes to motor control assembly 16A.

Herein, when confirming the rotating operation that does not carry out handover operation parts 23Cx, motor control assembly 16A is judged as and has carried out abnormal operation, and makes 27 actions of notice parts.These notice parts 27 are identical with above-mentioned the 2nd embodiment, and its effect is also identical.

On the other hand, make clutch from disarm state under the situation that connection status moves, the same with the 1st above-mentioned embodiment, can make it rotate and move to link position shown in Figure 8 to counter clockwise direction by operation handover operation parts 23Cx (rotary part 22c) and realize from the state that is positioned at the releasing position.

In this case, be fastened on the clicking sense that the moment among the 1st ratchet recess 22d produces by the link position that moves to regulation at handover operation parts 23Cx (rotary part 22c), the convex spring 24b of portion of ratchet spring 24, the operator can confirm clutch and connect.Then, the operator makes the predetermined operation that the action of maintenance sense switch 32 stops.

Herein, under the situation of not carrying out in the stipulated time of action shut-down operation after handover operation parts 23Cx is set in link position that keeps sense switch 32, motor control assembly 16A makes 27 actions of notice parts.Thus, the operator can confirm that the handover operation of clutch do not finish.

As mentioned above, in above-mentioned the 4th embodiment, can obtain and the roughly the same effect of above-mentioned the 2nd embodiment.And in the present embodiment, even there is unintentional external force to be applied on the handover operation parts 23Cx, by the effect of detent mechanism, handover operation parts 23Cx can not rotate easily yet.

And, when carrying out the intermittent operation of clutch, because input block needs at least two operations of parallel work-flow simultaneously, promptly keep the operation of sense switch 32 and the rotating operation of handover operation parts 23Cx, therefore can when the operator is involuntary, not carry out the interrupted of clutch, thereby can constitute reliable clutch, can guarantee safety.

In addition, the clutch of above-mentioned the 1st～the 4th each embodiment is to utilize frame for movement to carry out the alternate mechanical type clutch of clutch, but in the present embodiment, also can easily be applicable to the situation that the electromagnetic clutch by electrical action constitutes.

That is, in adopting the endoscope of electromagnetic clutch: do not receive self-sustaining sense switch 32 and be used to detect the motion detection switch both sides' of electromagnetic clutch action actuating signal, this electromagnetic clutch is moved as long as constitute such structure.Under the situation of this structure, also can obtain identical effect.

Below, the electrically bent endoscope of the 5th embodiment of the present invention is described.

Fig. 9 amplifies the summary construction diagram of expression with the part of the operating portion of the electrically bent endoscope of the present invention's the 5th embodiment, mainly represents the handover operation parts of the interrupted switching mechanism of driving force (clutch).

The basic structure of the electrically bent endoscope of present embodiment and above-mentioned the 1st embodiment are roughly the same.Therefore, omit the diagram of same structure and specify, below part inequality only is described.

As shown in Figure 9, in the electrically bent endoscope 10D of present embodiment, constitute: the handover operation parts (23x, 23Ax, 23Bx, 23Cx) that the handover operation parts 23Dx form the attached input block of conduct that operating portion 11D relatively freely loads and unloads replaces above-mentioned the 1st～the 4th embodiment are set.

That is, in the 10D of endoscope of present embodiment, constitute: in order to carry out the intermittent operation of clutch (illustrating especially), directly the pivot 22Db that the portion of principal organ with this clutch is linked carries out rotating operation.

That is, in the present embodiment, constituting and be provided with the box spanner formula handover operation parts 23Dx that forms L word shape, for example is the spanner of common hexagon socket head cap screw (hex bolts) usefulness.These handover operation parts 23Dx for example uses lock to wait link to link into an integrated entity with operating portion 11D as connecting device at the assigned position of operating portion 11D.Thus, prevent that these handover operation parts 23Dx from losing.

Corresponding therewith, form the hexagonal connecting hole 22Dba that the spanner shape (hexagon) with handover operation parts 23Dx matches at the leading section of pivot 22Db.

Pivot 22Db is arranged to and can be exposed to the outside from peristome 11Dd, and this peristome 11Dd penetrates the assigned position of the operating portion 11D side surface part that is arranged on the 10D of this endoscope.And peristome 11Dd is covered in the mode with watertightness by cover 33, and this cover 33 is for example formed by rubber components etc., and can be located on the operating portion 11D with freely loading and unloading.

23Dx is the same with the handover operation parts, and these cover 33 uses for example lock wait link to be connected integratedly on the assigned position of operating portion 11D, lose to prevent it.In addition, Fig. 9 represents to take off the state of the cover 33 that covers pivot 22Db.

And, be provided with the sign M of regulation at the assigned position of the leading section of pivot 22Db, corresponding therewith, in operating portion 11D side, near the outer peripheral edges portion of pivot 22Db, be provided with two signs N1, N2.Under this situation, for example, in Fig. 9, the sign N1 of " △ " expression is the link position that clutch is in connection status, and in Fig. 9, the sign N2 of " zero " expression is the releasing position that clutch is in disarm state.

In the 10D of endoscope of above-mentioned the 5th embodiment that constitutes as mentioned above, the effect when carrying out the intermittent operation of clutch is as described below.

At first, the operator takes off the cover 33 of operating portion 11D.Then, the operator is fastened on handover operation parts 23Dx among the connecting hole 22Dbb of pivot 22Db.At this moment, the sign M of pivot 22Db be in and indicate the N1 consistent location, be link position (state shown in Figure 9).

Make handover operation parts 23Dx rotate prescribed limit towards prescribed direction (for example clockwise direction), promptly turn to the sign M and sign N2 consistent location (releasing position) of pivot 22Db along the arrow R Fig. 9 from this state.Thus, clutch is in disarm state.

And, cover 33 is installed in the assigned position of the peristome 11Dd of the 11D of overlapping operation portion.

On the other hand, make clutch from disarm state when connection status moves, similarly, take off cover 33, in that handover operation parts 23Dx is fastened under the state among the connecting hole 22Dba of pivot 22Db, make it rotate prescribed limit to counter clockwise direction then along the arrow R Fig. 9 from removing the position.That is, make its sign M that turns to pivot 22Dd and sign N1 consistent location (link position).Thus, clutch is in connection status.

And, cover 33 is installed in the assigned position of the peristome 11Dd of the 11D of overlapping operation portion.

In above-mentioned the 5th embodiment of above explanation, constitute: making handover operation parts 23Dx constitute relative operating portion 11D can freely load and unload, and allow to carry out alternate pivot 22Dd tegmentum parts 33 coverings under normal condition of clutch, so only under the deliberate situation of operator, just can make the clutch action.Therefore, clutch can not carry out unintentional action when not required.And, when needed, because the intermittent operation of the clutch that need put rules into practice, so the operator can confirm the state of clutch all the time.

Below, the electrically bent endoscope of the present invention's the 6th embodiment is described.

Figure 10 amplifies the summary construction diagram of expression with the part of the operating portion of the electrically bent endoscope of the present invention's the 6th embodiment, is near the figure of structure the handover operation parts of the expression interrupted switching mechanism of driving force (clutch).In addition, Figure 11 is that the part with the operating portion of Figure 10 is to take out the figure of expression near the handover operation parts, is the major part side view when the arrow C direction of Figure 10 is watched.

The structure of present embodiment is roughly the same with the structure of above-mentioned the 1st embodiment basically, in the present embodiment, as shown in figure 10, has only the form of knob parts 23E of a part that constitutes handover operation parts 23Ex different with above-mentioned the 1st embodiment.Therefore, to the identical structure of above-mentioned the 1st embodiment, omit it and specify, below different parts only are described.

As shown in figure 10, the knob parts 23E of the handover operation parts 23Ex of present embodiment roughly forms circle, so that can be configured in the inside of the support 22a that the fixed part with operating portion 11E forms as one, and partly be formed with knob 23Ea in the substantial middle of knob parts 23E.Therefore, in interior all sides of these knob parts 23E, penetrate respectively to be provided with in the both side edges portion of knob 23Ea and roughly form semi-moon shaped hole 23Eb.This hole 23Eb is in order to make the operator pinch knob 23Ea easily when operating these handover operation parts 23Ex and to be provided with.

Therefore, as shown in figure 11, the knob parts 23E of the handover operation parts 23Ex of present embodiment is arranged to not outer surface from operating portion 11E to the outstanding state in outside, in other words, knob parts 23E on the assigned position of operating portion 11E to implant the setting of its inner state (burying input block).Other structures and effect thereof and above-mentioned the 1st embodiment are identical.

As mentioned above, according to above-mentioned the 6th embodiment, can obtain and the identical effect of above-mentioned the 1st embodiment, and because the knob parts 23E of handover operation parts 23Ex forms the state that is implanted in operating portion 11E inside, even so there is being unintentional external force to be applied under near the handover operation parts 23Ex the situation, handover operation parts 23Ex also can unexpectedly not rotate.That is, in the present embodiment, carry out the rotating operation of handover operation parts 23Ex consciously so long as not the operator, clutch is with regard to akinesia.Therefore, safety can be guaranteed, and good operability can not be destroyed.

Like this; the knob parts 23E of present embodiment is by forming the state that is implanted in operating portion 11E inside; can bring into play the effect of the anti-stop element (locking apparatus prevent in maloperation) of maloperation, and also play protect self as the unitary effect of handover operation component protection.

Below, the electrically bent endoscope of the present invention's the 7th embodiment is described.

Figure 12, Figure 13 are that the part with the operating portion of the electrically bent endoscope of the present invention's the 7th embodiment is to take out the figure that represents near the handover operation parts, Figure 12 is its side view, and Figure 13 is the approximate three-dimensional map when the handover operation parts are watched from the left side.

The structure of present embodiment is roughly the same with the structure of above-mentioned the 1st embodiment basically; in the present embodiment; as shown in Figure 12 and Figure 13; append the protection walls 34 that is provided with as handover operation component protection unit (handover operation protected location); this point is different with above-mentioned the 1st embodiment; wherein, protection walls 34 is used to cover and protects the part of outer peripheral edges portion of the knob parts 23 of a part that constitutes the handover operation parts.Therefore, to the identical structure of above-mentioned the 1st embodiment, omit it and specify, below different parts only are described.

As mentioned above; in the present embodiment; protection walls 34 covers and the part of the outer peripheral edges portion of the knob parts 23 of protection handover operation parts, and this protection walls 34 makes the part of the support 22a upper surface of the operating portion 11F of the 10F of this endoscope stretched out and forms.

This protection walls 34 is by forming with the roughly the same material of the external component of operating portion 11F, and it is by using mode such as bonding to be arranged on the independent formation parts on the upper surface of support 22a or forming as one with support 22a.

In addition, this protection walls 34 is arranged to can to protect at least the direction of action (rotation direction) of the knob parts 23 of handover operation parts.Other structures and effect thereof and above-mentioned the 1st embodiment are identical.

As mentioned above, according to above-mentioned the 7th embodiment, can obtain and the identical effect of above-mentioned the 1st embodiment, and owing in the part of the outer peripheral edges portion of the knob parts 23 of handover operation parts protection walls 34 is set at least, even, also can prevent its rotation so apply unintentional external force to action (rotation) direction of these knob parts 23.Therefore, clutch can not move when involuntary, can guarantee higher safety, and can not destroy good operability.

Below, the electrically bent endoscope of the present invention's the 8th embodiment is described.

Figure 14 amplifies the summary construction diagram of expression with the part of the operating portion of the electrically bent endoscope of the present invention's the 8th embodiment, and near the internal structure of handover operation parts of the interrupted switching mechanism of driving force (clutch) represented in summary.

The structure of present embodiment is roughly the same with the 1st above-mentioned embodiment basically, but in the present embodiment, as shown in figure 14, be with the difference of above-mentioned the 1st embodiment, the knob parts 23G of a part that constitutes the handover operation parts and and the pivot 22Gb of portion of the principal organ interlock of clutch between, be provided with the elastic component 35 that connects both, so that can transmit to the clutch side from the action force of handover operation component side.Therefore, for the identical structure of above-mentioned the 1st embodiment, omit it and specify, below part inequality only is described.

In the present embodiment, the knob parts 23G of handover operation parts is arranged on peristome 11Gb inside, and this peristome 11Gb is formed at the assigned position of the external component 11Ga of operating portion 11G.In this case, between the inner peripheral portion of the outer peripheral edges portion of knob parts 23G and peristome 11Gb, be provided with the O-ring seals 36 that forms the regulation shape.Because this O-ring seals 36 is configured among the peristome 11Gb to knob parts 23G watertightness.

And, between knob parts 23G and pivot 22Gb, be provided with elastic component 35 as mentioned above, and connect into and can will transmit to the clutch side from the action force (revolving force) of knob parts 23G side by this elastic component 35.

In this case, elastic component 35 constitutes and for example comprises elastomeric spring etc., and forms and can absorb its axial strength and from the strength of the direction that tilts to axial.Promptly, for example, clockwise spinning force is disperseed, on the other hand, regulation spinning force (for example having rotated the spinning force the when anglec of rotation 10 degree～20 are spent) in the anticlockwise spinning force is absorbed, makes this spinning force not pass to knob parts 23G.

Therefore, knob parts 23G towards the rotation of the direction of elastic component 35 tension surpass to a certain degree amount (the regulation strength of the anglec of rotation 10 degree～20 degree), when elastomer 35 can not absorb its spinning force, this elastomer 35 plays the effect that this spinning force is passed to pivot 22Gb.Thus, from the operating physical force (revolving force) of rotary part 23G side, transmit to the clutch side by elastic component 35.Other structures and effect thereof and above-mentioned the 1st embodiment are roughly the same.

As mentioned above, according to above-mentioned the 8th embodiment, can obtain and the identical effect of above-mentioned the 1st embodiment, and owing between knob parts 23G and pivot 22Gb, be provided with elastic component 35, so when the load that involuntary external force is arranged is applied on the knob parts 23G of handover operation parts, by the effect of elastic component 35, the direction vector of the load that is applied is changed.That is, in this case, elastic component 35 plays the effect of the load dispersal unit (load decentralized institution) of the load that dispersion applies.

Therefore, the load of this external force generation can not be directly passed to clutch by pivot 22Gb.So the external load that can suppress relative handover operation parts has influence on each parts of constituting operating portion 11G etc.

Below, the electrically bent endoscope of the present invention's the 9th embodiment is described.

Figure 15 amplifies the summary construction diagram of expression with the part of the operating portion of the electrically bent endoscope of the present invention's the 9th embodiment, near the internal structure the handover operation parts of the expression interrupted switching mechanism of driving force (clutch).

As shown in figure 15, the electrically bent endoscope 10 of present embodiment has the localized unit that carries out clutch unit 25 accurately, guarantees to be used to carry out the watertightness of installation position of handover operation portion of the intermittent operation of clutch thus.

The basic structure of present embodiment and above-mentioned the 1st embodiment are roughly the same.Therefore, to the identical structure of above-mentioned the 1st embodiment, omit it and specify, below part inequality only is described.

As shown in figure 15, in operating portion 11 inside of the endoscope 10 of present embodiment, clutch unit 25 is configured in assigned position, and ining succession on this clutch unit 25 is provided with handover operation parts 23x, is used to carry out its intermittent operation.As illustrating in above-mentioned the 1st embodiment, these handover operation parts 23x ins succession and is provided with on the pivot 22b, and this pivot 22b links in operating portion 11 inner portions of principal organ (not shown) with clutch unit 25.

These handover operation parts 23x is configured to its knob parts 23 and is exposed to the outside from the peristome 11d that penetrates on the assigned position that is arranged on operating portion 11 side surface part, and its part is outstanding slightly from the external component surface of operating portion 11.

Need guarantee watertightness in the installation position of the relative operating portion 11 of handover operation parts 23x herein.In order to guarantee its watertightness reliably and to keep this state, need the peristome 11d of relative operating portion 11 that following two positions are set accurately, that is: be fixedly installed on the unitary installation site of clutch on the internal fixation parts of this operating portion 11 and in succession and be arranged on the installation site of the handover operation parts 23x on the clutch unit 25.

Therefore, in the present embodiment, solve this problem in the form of the support unit of operating portion 11 internal fixation supporting clutch unit 25 by design.

That is, in the present embodiment, as shown in figure 15, clutch unit 25 in operating portion 11 inside by two clutch cramp bar 37 elastic bearings as supporting device.Herein, clutch cramp bar 37 has: galianconism portion, and the one end is fixedly installed on the side of clutch unit 25; Long-armed portion, its other end from this galianconism portion begins to extend, and limits its position by the regulation unit near the handle portion 11e of operating portion 11 inside.

Be formed with protuberance 37bb near the leading section of long-armed portion, when being disposed at operating portion 11 inside, this protuberance 37bb is outstanding toward the outer side at this clutch cramp bar 37.

For to should protuberance 37bb, near the internal fixation parts 11b the handle portion 11e of operating portion 11 be formed with recess 11bb, and it has the opening that size can engage with protuberance 37bb.

And the protuberance 37bb of the long-armed portion of clutch cramp bar 37 engages with the recess 11bb of the internal fixation parts 11b of the handle 11e of operating portion 11.

In above-mentioned the 9th embodiment that constitutes as mentioned above, in operating portion 11 inside, clutch unit 25 is by the 37 fixing and supportings of clutch cramp bar, on this clutch cramp bar 37, be provided with protuberance 37bb, on the other hand, the recess 11bb that will engage with this protuberance 37bb is arranged on the internal fixation parts 11b of operating portion 11 sides, so can accurately clutch unit 25 be positioned at assigned position.Therefore, can carry out location between the installation portion (peristome 11d) of clutch unit 25 and handover operation parts 23x accurately.

And when the load that involuntary external force is arranged was applied on the operating portion 11, this load passed to clutch cramp bar 37 by the bonding part of recess 11bb and protuberance 37bb, so form the structure that this load is difficult to be delivered to handover operation parts 23x.

, in the electrically bent endoscope of above-mentioned each embodiment, be provided with clutch in the inside of operating portion and comprise the structure members such as driving force transmission mechanism of clutch.Because the existence of these structure members, the weight ratio of operating portion is bigger.

On the other hand, operating portion is held in by the operator who it is used operation in oneself the hands and operates, and in most of the cases, the operator is hold by one hand use.

Therefore, need make user be unaware of singlehanded design of supporting the weight sense when using operating portion.

Generally, when people hold than heavy articles at one hand, different sometimes according to the weight sense that the shape of this object is experienced.That is, holding center of gravity when concentrating near the substantial middle portion object,, be well known that to alleviate its weight sense if the center of gravity of object is remained near the approximate centre position of the palm of the hand.That is, this is because if the center of gravity of object is positioned near the approximate centre position of the palm of the hand, and the load moment of wrist diminishes relatively.

Therefore, in the electrically bent endoscope of above-mentioned each embodiment, is the configuration of the structure member of representative by design with the clutch that is arranged on this operating portion inside etc., as shown in figure 16, set for and make its position of centre of gravity CB near the approximate centre position of the operator's palm of the hand that grip to use operating portion (reference marks CB).

By forming this structure, can alleviate the weight sense of the hands that relative operator keeps operating portion, so the operator can stably keep operating portion, help to improve operability.

In addition, the invention is not restricted to above-mentioned embodiment, certainly in the scope that does not break away from the invention aim, carry out various distortion and application.

The present invention according to above narration, a kind of electrically bent endoscope can be provided, its can carry out more reliably by the effect of the clutch that is applicable to electrically bent endoscope the connection of the driving force bang path that can realize and the switching of cut-out, and can keep the state that sets reliably, simultaneously, when carrying out handover operation, user can be learnt the state that switches to setting really, can improve operability and guarantee safety.

And, according to the present invention, can provide a kind of electrically bent endoscope, realized can guaranteeing higher safety not because of carry out the structure of change action easily with respect to the external strength of handover operation parts.

Claims (30)

1. an electrically bent endoscope is characterized in that, comprising:

Driver element as the driving force supply source;

The driving force transfer unit, its driving force that is used for supplying with from described driver element passes to bending section so that described bending section bending;

The interrupted unit of driving force, it is located at from described driver element on the driving force bang path that described bending section transmits, and is used to make the transmission of driving force intermittently to carry out;

This electrically bent endoscope has,

The handover operation unit, it constitutes and the interrupted unit interlock of described driving force, and makes by the interrupted unitary described driving force transmission of described driving force interrupted by operation; With

Detent mechanism, it is made of ratchet spring and two ratchet recesses, by moving, prevent that the transmission of the interrupted unitary described driving force of described driving force from not inadvertently being operated position that is in connection status and the position that is in disarm state position in addition with the unitary operations linkage of described handover operation.

2. electrically bent endoscope according to claim 1 is characterized in that, described detent mechanism comprises operation self-induction notice of invitation unit, and it is used to make the own ongoing operation of operator's perception of operating.

3. electrically bent endoscope according to claim 2 is characterized in that, described operation self-induction notice of invitation unit comprises strength perception change unit, and this strength perception change unit produces discontinuous variation by strength and comes sense operation.

4. electrically bent endoscope according to claim 2 is characterized in that, described operation self-induction notice of invitation unit comprises and feel the notification unit notified that this notification unit is used to make the own ongoing operation of operator's perception.

5. electrically bent endoscope according to claim 4 is characterized in that, described notification unit by sound from acoustically feel the notice.

6. electrically bent endoscope according to claim 4 is characterized in that, described notification unit by light from visually feel the notice.

7. electrically bent endoscope according to claim 6 is characterized in that, described notification unit carries out the visual notification of light in the field of view of endoscope.

8. electrically bent endoscope according to claim 6 is characterized in that, also has the display device that is used to observe subject,

Described notification unit carries out the visual notification of light by the display frame of described display device.

9. electrically bent endoscope according to claim 4 is characterized in that, described notification unit is felt notice by vibration from sense of touch.

10. electrically bent endoscope according to claim 9 is characterized in that described notification unit has driving control device, and described driving control device produces vibration by periodically driving described driver element, controls described driving device.

11. electrically bent endoscope according to claim 2 is characterized in that, described operation self-induction notice of invitation unit comprises the input block of the continued operation that two steps of needs or two steps are above.

12. electrically bent endoscope according to claim 2 is characterized in that, described operation self-induction notice of invitation unit comprises the input block of the two or more while parallel work-flows of needs.

13. electrically bent endoscope according to claim 2 is characterized in that, described operation self-induction notice of invitation unit is attached input block, and this attached input block forms the operating portion that is located at this electrically bent endoscope relatively and can freely load and unload.

14. electrically bent endoscope according to claim 1 is characterized in that, described detent mechanism is to be used to protect the unitary handover operation protected location of described handover operation.

15. electrically bent endoscope according to claim 14 is characterized in that, described handover operation protected location is to implant input block, and this implantations input block is arranged to not to give prominence to the outside from the outer surface of the operating portion that is located at this electrically bent endoscope.

16. electrically bent endoscope according to claim 1 is characterized in that, described handover operation unit constitutes the load dispersal unit of the load that comprises that dispersion applies.

17. an electrically bent endoscope is characterized in that, comprising:

Elongated insertion section, its have can be in prescribed limit crooked bending section;

Be located at the operating portion of the base end side of described insertion section;

Generation makes the drive source of the driving force of described bending section bending;

The driving force transmission mechanism, its described driving force that is used for supplying with from described drive source passes to described bending section;

The driving force interrupted gear, it is located at from described drive source on the driving force bang path that described bending section transmits, and is used to make the transmission of described driving force intermittently to carry out;

This electrically bent endoscope has,

The handover operation parts, its be located on the described operating portion and with described driving force interrupted gear mechanical connection, make by the described driving force transmission of described driving force interrupted gear interrupted by operation;

Detent mechanism, it is made of ratchet spring and two ratchet recesses, move by operations linkage, prevent that the transmission of the interrupted unitary described driving force of described driving force from not inadvertently being operated position that is in connection status and the position that is in disarm state position in addition with described handover operation parts.

18. electrically bent endoscope according to claim 17 is characterized in that, described handover operation parts constitute and can move,

Described detent mechanism constitutes and comprises the perception unit that is used for the assigned position of these handover operation parts of perception on mobile route.

19. electrically bent endoscope according to claim 18 is characterized in that, described handover operation parts constitute and can move on direction of rotation.

20. electrically bent endoscope according to claim 18 is characterized in that, described perception unit produces discontinuous variation by strength and comes this handover operation position component of perception.

21. electrically bent endoscope according to claim 18 is characterized in that, also comprises:

Checkout gear, it is installed on the described handover operation parts integratedly, is used to detect the on-off state and the output detection signal of described driving force interrupted gear;

Holding wire, it stretches out from described checkout gear, is used to transmit the detection signal from this checkout gear output;

The holding wire fixed part, it limits the moving range of the described holding wire that moves of following described handover operation parts by at least a portion of fixing described holding wire.

22. electrically bent endoscope according to claim 18 is characterized in that, described perception unit constitutes and comprises:

Checkout gear, it is used for the detecting operation, and whether the person contacts the handover operation parts;

Notification unit, although this checkout gear detect the contact these handover operation parts at the appointed time not by the situation of normal running under, this notification unit is notified this situation.

23. electrically bent endoscope according to claim 17 is characterized in that, described handover operation parts constitute the mechanical connection that can cut off with described driving force interrupted gear.

24. electrically bent endoscope according to claim 23, it is characterized in that, also have connecting device, it is used for when having cut off the mechanical connection of described handover operation parts and described driving force interrupted gear, prevents that these handover operation parts break away from described operating portion.

25. electrically bent endoscope according to claim 17 is characterized in that, described handover operation parts are arranged to not outstanding from the outer surface of described operating portion.

26. electrically bent endoscope according to claim 17 is characterized in that, also has protection walls, it protects described handover operation parts can not be subjected to unintentional effect from the direction along the outer surface of described operating portion.

27. electrically bent endoscope according to claim 18, it is characterized in that, also has the load decentralized institution, do not reach setting when above in the strength that described handover operation parts are moved, this load decentralized institution makes the strength that is applied on these handover operation parts not pass to described driving force interrupted gear.

28. electrically bent endoscope according to claim 17 is characterized in that, also has supporting device, it is used to support described driving force interrupted gear and makes it can change position in described operating portion inside.

29. electrically bent endoscope according to claim 17 is characterized in that, also has guard block, it protects described handover operation parts in the outside relatively mode with watertightness.

30. electrically bent endoscope according to claim 17, it is characterized in that described driving force interrupted gear is configured to like this, promptly, make the position of centre of gravity of the described operating portion that comprises this driving force interrupted gear, be positioned on the normal of the approximate centre that is erected at the palm that grips this operating portion.

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